This Recommendation:?gives advice on general requirements of the main phases in which the work can be divided;?gives advice on the methods and procedures for performing the work;?gives some application criteria;?describes situations where a low impact urban trenching technique is recommended.
ITU-T L.83-2010 Referenced Document
ITU-T L.39-2000 Investigation of the Soil Before Using Trenchless Techniques Series L: Construction Installation and Protection of Cables and Other Elements Of Outside Plant Study Group 6